[NaCl SDK] Make the SDK examples buildable as a packaged app.

native_client_sdk/src/build_tools/build_utils.py

Index: native_client_sdk/src/build_tools/build_utils.py
diff --git a/native_client_sdk/src/build_tools/build_utils.py b/native_client_sdk/src/build_tools/build_utils.py
index 83df0300578bf7ef0ec328f880d070c7d5dd7c1f..ffe8cf0d38800eef260a442c4de590a93f59371c 100644
--- a/native_client_sdk/src/build_tools/build_utils.py
+++ b/native_client_sdk/src/build_tools/build_utils.py
@@ -31,8 +31,18 @@ def ChromeVersion():
   if info.url.startswith('/trunk/'):
     return 'trunk.%s' % info.revision
   else:
-    exec(open(VERSION_PATH).read())
-    return '%s.%s.%s.%s' % (MAJOR, MINOR, BUILD, PATCH)
+    return ChromeVersionNoTrunk()
+
+
+def ChromeVersionNoTrunk():
+  '''Extract the chrome version from src/chrome/VERSION.
+  Ignore whether this is a trunk build.
+
+  Returns:
+    Chrome version string.
+  '''
+  exec(open(VERSION_PATH).read())
+  return '%s.%s.%s.%s' % (MAJOR, MINOR, BUILD, PATCH)
 
 
 def ChromeMajorVersion():